Voters in Ayer and Shirley approved a proposed $56 million renovation and expansion of Ayer Shirley High School on Saturday.

Voters considered two questions:

* Approval of a Proposition 2 1/2 debt exclusion for each town to pay its share of the project. The towns would pay about $19.8 million of the project cost, with the remainder paid by the Massachusetts School Building Authority.

Ayer approved the debt exclusion 1,076-164. Shirley voted 937-437 in favor.

Both towns had to approve this question individually.

* Approval of the renovation/addition project, based on a combined vote of both towns. Ayer voted 1,117-132 in favor of the project. Shirley voted 936-438 in favor, for a combined 2,053-570 approval.

The project includes renovations to major building systems including electrical, plumbing and windows. In addition, it will feature a common area in front of the school for student meetings and social events, a new library and media center, increased outdoor access for emergency vehicles and a rotary in front of the building to allow for better traffic flow.